Giro SPF 30 Ultralight Cap

"The SPF 30 Ultralight Cap from Giro is the ideal companion for all cyclists and hikers who value optimum sun protection and comfort. With an SPF-rating of 30+, this cap effectively protects against harmful UV-rays, while the small peak protects against both sun and rain. The cap is specially designed to be worn comfortably under a helmet without being conspicuous. The shortened brim improves peripheral vision, which is particularly beneficial when riding a road bike."
"Made from a blend of 96% polyester and 4% other fibers, the cap offers excellent moisture wicking and keeps the head dry even during intense activity. The elasticated rear panel ensures a perfect fit in a one-size-fits-all size that adapts to any head shape. Whether you're on a daily bike ride or an extended hike, the SPF 30 Ultralight Cap offers the protection and comfort that active men are looking for."